The antonym of all is "none".
Some, part.
An antonym for waste could be spend. That's all I know.
An antonym of unidirectional (one direction) would be omnidirectional (all directions).
I don't think there is an antonym for raft. If you tried Dictionary.com, and looked at all the definitions, synonyms and antonyms, and there was no antonym; there probably isn't one.
It does not have antonym. Not all nouns do.
Nothing
Synonyms for "knapsack" are: * backpack * bookbag An antonym would be . . . books and belongings all over the sidewalk.
The antonym of the word 'synonym' is 'antonym'.
Not all words have perfect antonyms. But rain forest would come pretty close as an antonym for desert.
the number 4
First of all, orientate is not a proper English word. The correct word is orient. It's antonym is disorient.
Not all words have antonyms, and there is no antonym for carbohydrate. However, in a nutritional sense, protein is considered a primary alternative to carbodydrates.
Antonym means "opposite", so not all words have good antonyms. Porridge is one of them, there is no word for anti-porridge.